Question

每次呼叫pushViewController此控制器时，都会收到消息“数组索引超出范围”。

我找到了很长时间的原因。

我在使用它时检查了每个Array的长度和索引。

但要找出原因真的很难。

所以，我在这里粘贴，希望有人能找到原因。

import UIKit

class Notification: UIViewController, UITableViewDelegate, UITableViewDataSource {


var NotImg = ["one","one","one","one","one","one"]
var NotName = ["系统通知","系统通知","系统通知","系统通知","系统通知","系统通知"]
var NotDetail = ["aaa","bbb","ccc","ddd","eee","fff"]
@IBOutlet weak var TV: UITableView!
override func viewDidLoad() {
    super.viewDidLoad()


    TV.delegate = self
    TV.dataSource = self
    self.title = "通知"

    TV.tableFooterView = UIView()

    self.navigationItem.backBarButtonItem = UIBarButtonItem(title: " ", style: UIBarButtonItemStyle.Plain, target: nil, action: nil)
    self.navigationController!.navigationBar.tintColor = UIColor.whiteColor()
    // Do any additional setup after loading the view.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int{
    return NotName.count
}

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell{
    let cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! UITableViewCell
    cell.imageView?.image = UIImage(named: NotImg[indexPath.row])
    cell.textLabel?.text = NotName[indexPath.row]
    cell.detailTextLabel?.text = NotDetail[indexPath.row]
    cell.separatorInset = UIEdgeInsetsZero
    cell.preservesSuperviewLayoutMargins = false
    cell.layoutMargins = UIEdgeInsetsZero
    return cell

}


func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
    return 50.0
}



func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {

    tableView.deselectRowAtIndexPath(indexPath, animated: false)
    let VC = self.storyboard?.instantiateViewControllerWithIdentifier("NotDetail") as! NotificationDetail
    self.navigationController?.pushViewController(VC, animated: true)
}


override func viewWillAppear(animated: Bool) {
    setTabBarVisible(!tabBarIsVisible(), animated: true)
}



func setTabBarVisible(visible:Bool, animated:Bool) {

    //* This cannot be called before viewDidLayoutSubviews(), because the frame is not set before this time

    // bail if the current state matches the desired state
    if (tabBarIsVisible() == visible) { return }

    // get a frame calculation ready
    let frame = self.tabBarController?.tabBar.frame
    let height = frame?.size.height
    let offsetY = (visible ? CGFloat(0): height)

    // zero duration means no animation
    let duration:NSTimeInterval = (animated ? 0.3 : 0.0)

    //  animate the tabBar
    if frame != nil {
        UIView.animateWithDuration(duration) {
            self.tabBarController?.tabBar.frame = CGRectOffset(frame!, 0, offsetY!)
            return
        }
    }
}


func tabBarIsVisible() ->Bool {
         return self.tabBarController?.tabBar.frame.origin.y < CGRectGetMaxY(self.view.frame)
     }
}

当程序推送到此控制器时，这是消息的屏幕截图。

好。这是下一个ViewController（NotDetail）的代码。

import UIKit

class NotificationDetail: UIViewController {

@IBOutlet weak var NotDetail: UILabel!
@IBOutlet weak var NotTime: UILabel!
@IBOutlet weak var NotTitle: UILabel!
@IBOutlet weak var NotImg: UIImageView!
override func viewDidLoad() {
    super.viewDidLoad()

    NotImg.image = UIImage(named: "focus")
    // Do any additional setup after loading the view.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

这是跳转到此ViewController之前ViewController（Message）的代码。

import UIKit

class Message: UITableViewController, UITableViewDataSource, UITableViewDelegate {

var UsersNameA = ["大哈","二哈","三哈","四哈","五哈","六哈"]
var UsersMesA = ["啊","啊","啊啊","啊啊","啊啊啊","啊啊啊啊"]
@IBOutlet var MessageTV: UITableView!
override func viewDidLoad() {
    super.viewDidLoad()
    MessageTV.delegate = self
    MessageTV.dataSource = self

    self.navigationItem.backBarButtonItem = UIBarButtonItem(title: " ", style: UIBarButtonItemStyle.Plain, target: nil, action: nil)
    self.navigationController!.navigationBar.tintColor = UIColor.whiteColor()

    MessageTV.tableFooterView = UIView()

    let options = PullToRefreshOption()
    options.backgroundColor = UIColor(red: 239/255, green: 239/255, blue: 244/255, alpha: 1)
    options.indicatorColor = UIColor.blackColor()

    self.MessageTV.addPullToRefresh(options: options, refreshCompletion: { [weak self] in
        // some code

        self!.MessageTV.reloadData()
        self!.MessageTV.stopPullToRefresh()
        })

    // Uncomment the following line to preserve selection between presentations
    // self.clearsSelectionOnViewWillAppear = false

    // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
    // self.navigationItem.rightBarButtonItem = self.editButtonItem()
}
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath){
    self.tableView.deselectRowAtIndexPath(indexPath, animated: false)
    if indexPath.row == 0 {
        let VC = self.storyboard?.instantiateViewControllerWithIdentifier("Not") as! Notification
        self.navigationController?.pushViewController(VC, animated: true)
    }
    if indexPath.row == 1 {
        let VC = self.storyboard?.instantiateViewControllerWithIdentifier("Comment") as! Comment
        self.navigationController?.pushViewController(VC, animated: true)
    }
    else {
        let VC = self.storyboard?.instantiateViewControllerWithIdentifier("Chat") as! ChatRoomViewController
        VC.UserName = UsersNameA[indexPath.row - 2]
        self.navigationController?.pushViewController(VC, animated: true)
    }
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

// MARK: - Table view data source

override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    // #warning Potentially incomplete method implementation.
    // Return the number of sections.
    return 1
}

override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    // #warning Incomplete method implementation.
    // Return the number of rows in the section.
    return UsersNameA.count + 2
}

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {


    if indexPath.row == 0 {
        let cell = tableView.dequeueReusableCellWithIdentifier("cell1") as! UITableViewCell
        cell.imageView?.image = UIImage(named: "not")
        cell.textLabel?.text = "通知"
        cell.separatorInset = UIEdgeInsetsZero
        cell.preservesSuperviewLayoutMargins = false
        cell.layoutMargins = UIEdgeInsetsZero
        return cell
    }
    if indexPath.row == 1 {
        let cell = tableView.dequeueReusableCellWithIdentifier("cell1") as! UITableViewCell
        cell.imageView?.image = UIImage(named: "mes")
        cell.textLabel?.text = "消息"
        cell.separatorInset = UIEdgeInsetsZero
        cell.preservesSuperviewLayoutMargins = false
        cell.layoutMargins = UIEdgeInsetsZero
        return cell
    }
    else {
        let cell = tableView.dequeueReusableCellWithIdentifier("cell2") as! UITableViewCell
        cell.imageView?.image = UIImage(named: "one")
        cell.textLabel?.text = UsersNameA[indexPath.row - 2]
        cell.detailTextLabel?.text = UsersMesA[indexPath.row - 2]
        cell.separatorInset = UIEdgeInsetsZero
        cell.preservesSuperviewLayoutMargins = false
        cell.layoutMargins = UIEdgeInsetsZero
        return cell
    }

}

override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
    return 50.0
}





override func viewWillAppear(animated: Bool) {
    setTabBarVisible(!tabBarIsVisible(), animated: true)
}


func setTabBarVisible(visible:Bool, animated:Bool) {

    //* This cannot be called before viewDidLayoutSubviews(), because the frame is not set before this time

    // bail if the current state matches the desired state
    if (tabBarIsVisible() == visible) { return }

    // get a frame calculation ready
    let frame = self.tabBarController?.tabBar.frame
    let height = frame?.size.height
    let offsetY = (visible ? CGFloat(0) : height)

    // zero duration means no animation
    let duration:NSTimeInterval = (animated ? 0.3 : 0.0)

    //  animate the tabBar
    if frame != nil {
        UIView.animateWithDuration(duration) {
            self.tabBarController?.tabBar.frame = CGRectOffset(frame!, 0, offsetY!)
            return
        }
    }
}


func tabBarIsVisible() ->Bool {
    return self.tabBarController?.tabBar.frame.origin.y < CGRectGetMaxY(self.view.frame)
}
}

Answer 1

我已经解决了这个问题!!!!

原因是我的语法很差!!!

此代码导致崩溃

override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath){
self.tableView.deselectRowAtIndexPath(indexPath, animated: false)
if indexPath.row == 0 {
    let VC = self.storyboard?.instantiateViewControllerWithIdentifier("Not") as! Notification
    self.navigationController?.pushViewController(VC, animated: true)
}
if indexPath.row == 1 {
    let VC = self.storyboard?.instantiateViewControllerWithIdentifier("Comment") as! Comment
    self.navigationController?.pushViewController(VC, animated: true)
}
else {
    let VC = self.storyboard?.instantiateViewControllerWithIdentifier("Chat") as! ChatRoomViewController
    VC.UserName = UsersNameA[indexPath.row - 2]
    self.navigationController?.pushViewController(VC, animated: true)
}
}

我错误地使用了if-else语句然后导致了这个问题。

如果indexPath == 0并且它将执行第一个闭包和第三个闭包。

崩溃来了。：（

感谢您的回答。

Answer 2

您正在didSelectRowAtIndexPath中调用tableView.deselectRowAtIndex。

请删除该行和您的代码应该没问题。

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: 
    let VC = self.storyboard?.instantiateViewControllerWithIdentifier("NotDetail") as! NotificationDetail
        self.navigationController?.pushViewController(VC, animated:true)
}

数组索引超出范围，同时推送到另一个UIViewController

2 个答案: